USMC CERTIFICATION # 69-000607-13704Trust the Marines, they should know what they're talking about.
The ultimate new pick resistant technical silk mesh, Phase 1 is more breathable, quicker drying and stretches (4 ways) more efficiently than any other tech silk on the market. The light and airy Phase 1 fabrics are ideal for hot to temperate weather; the fabric disperses and holds moisture during high energy activity so the wearer enjoys the benefits of evaporative cooling. Phase 1 garments can additionally be worn as sub layers with other like garments for cold temperatures.
Phase 1 garments are constructed with 100% Acclimate® Dry performance fabric and protected with Scent Prevent® anti-microbial. All models feature Clean Seam™ technology, a manufacturing process which employs truly flat locked seams, and performance positioning of seams to completely eliminate the grind from load bearing anatomy. All tops have a slightly longer body length for stay tucked performance in high energy activities. Phase 1 garments achieve the highest wicking performance ratings, according to ASTM standards and wicking remains 90% effective even after 50 washings.